The train was like a silent metal beast, slowly driving into the depths of the thick fog.

Outside the window was no longer the clear, shimmering light common to the Emerald Sea; instead, it was swallowed by a gray mist, making even the sound of the waves indistinct.

The needle on the elemental detector began to vibrate irregularly, emitting a low-frequency hum.

The train continued forward through the thick fog.

The pink haze outside the window became increasingly apparent, silently washing over the sea and coiling around the islands.

As the journey progressed deeper, the mist gradually thinned, and a strange sight emerged before their eyes.

Countless small islands were scattered across the sea like pieces on a chessboard, evenly spaced and arranged with apparent mystery, as if forming a vast, naturally occurring formation.